baber/WOPTO huggingface dataset:
Patent AU-7761300-A (AU)
Title: Device for pretreating and then plastifying or agglomerating plastics
Inventor: BACHER HELMUT
IPC: B29C48/53
Filed: 2000-09-29
Abstract: An apparatus for pre-processing and subsequent plastification or agglomeration of synthetic plastic materials, in particular thermoplastic waste plastics for recycling purposes, has a receptacle ( 1 ) in which at least one comminuting tool ( 6 ) circulates. The housing ( 7 ) of a screw ( 8 ) is connected to the receptacle ( 1 ). The diameter (D) of the receptacle ( 1 ) has the following relationship to the screw diameter (d): <?in-line-formulae description="In-line Formulae" end="lead"?>D=10.{square root over (K.d<SUP>2</SUP>)}, wherein <?in-line-formulae description="In-line Formulae" end="tail"?> D is the inner diameter of the receptacle in mm, d is the screw diameter in mm and K is a dimension-less constant which amounts to at least 190. Thereby the dwell times of the synthetic plastic material within the receptacle ( 1 ) are kept at optimal values.
Patent AU-7847687-A (AU)
Title: Novel suspoemulsions of active ingredients for plant protection
Inventor: FRISCH GERHARD
IPC: A01N25/04
Filed: 1987-09-16
Abstract: Plant protection agents containing one or more agents, based on suspoemulsions containing aqueous and organic phases, the organic phase containing one or more surfactants from the group of ethylene oxide/propylene oxide block polymers having an average molecular weight of 1000 - 20000. The suspoemulsions are exposed to high shear forces. Even afterwards, they exhibit constant viscosity behaviour, despite a larger drop number and smaller drop size.
Patent AU-7927482-A (AU)
Title: Immunoglobulin-vindesine conjugates
Inventor: ROWLAND GEORGE FERDINAND
IPC: C07B43/02
Filed: 1982-01-07
Abstract: There is described an immunoglobulin conjugate comprising an immunoglobulin or immunoglobulin fragment modified by one or more groups of the following formula which are covalently linked to it: <CHEM>   The conjugates are useful in the treatment of cancers and are made by reaction of the immunoglobulin or immunoglobulin fragment with desacetylvinblastine acid azide.
Patent AU-8130994-A (AU)
Title: Stable cell lines capable of expressing the adeno-associated virus replication gene
Inventor: TREMPE JAMES P
IPC: C07K14/015
Filed: 1994-11-03
Abstract: PCT No. PCT/US94/12582 Sec. 371 Date Jan. 9, 1995 Sec. 102(e) Date Jan. 9, 1995 PCT Filed Nov. 3, 1994 PCT Pub. No. WO95/13392 PCT Pub. Date May 18, 1995Stable packaging cell lines derived from human 293 cells which are transfected with an AAV vector having the AAV rep gene operably line to a heterologous transcription promoter, such as the metallothionein promoter, or an AAV Rep78 insensitive homologous promoter and which are capable of producing AAV Rep proteins and being useful for packaging recombinant AAV vectors containing target polynucleotides.
Patent AU-8209787-A (AU)
Title: Adhesive products
Inventor: CUNNINGHAM BARRY CHARLES
IPC: A61L15/16
Filed: 1987-12-04
Abstract: An adhesive product suitable for use on wounds which comprises a backing layer of a moisture vapour transmitting polymer film and a layer of pressure adhesive containing at least 30% by weight of acrylic adhesive and at least 30% by weight of alginate, processes for the preparation thereof and methods of treating wounds therewith are described.
Patent AU-8263582-A (AU)
Title: Acetal stabilized prostaglandin compositions
Inventor: YU CHENG-DER
IPC: A61K31/557
Filed: 1982-04-15
Abstract: Degradation of prostaglandins in anhydrous or aqueous pharmaceutically acceptable, water-miscible alcohol solutions is prevented by adding a stabilizing amount of a pharmaceutically acceptable acetal.
Patent AU-8376391-A (AU)
Title: Tricyclic heterocycles
Inventor: TUCKER HOWARD
IPC: C07D413/10
Filed: 1991-09-10
Abstract: The invention relates to tricyclic heterocycles, or pharmaceutically-acceptable salts thereof, which possess anti-hyperalgesic properties. The invention also relates to processes for the manufacture of said tricyclic heterocycles; and to novel pharmaceutical compositions containing them. The invention provides a tricyclic heterocycle of the formula I <CHEM> wherein X is oxy, thio, sulphinyl, sulphonyl, amino, (1-4C)alkylamino or methylene;  Y is carbonyl or methylene;  each R<1> includes hydrogen and halogeno;  each of m and n is 1 or 2; each of A<1> and A<2> is a direct link, alkylene, alkenylene or alkynylene; Ar is phenylene which may optionally bear one or two substituents; and  G is carboxy, 1H-tetrazol-5-yl or a group of the formula:- <MATH>  wherein R<2> is (1-4C)alkyl, benzyl or phenyl; or a pharmaceutically-acceptable salt thereof.
Patent AU-8463698-A (AU)
Title: Catalyst and process for the preparation of aromatic carbonates
Inventor: YOSHISATO EISHIN
IPC: C07C68/00
Filed: 1998-08-04
Abstract: Aromatic carbonates can be prepared economically and efficiently by reacting an aromatic hydroxy compound with carbon monoxide and oxygen in the presence of a catalyst wherein a palladium compound is supported on a perovskite-type composite oxide represented by the following formula (1) or (1'): M(1-x)M'xM'' Oy (wherein, M is a group IIIB metal; x is a number of 0 to 1; M' is a metal having an ionic radius of 0.90  ANGSTROM  or more; M'' is Mn, Cr, Co, Fe, Ni or Cu; y is a number of 2.5 to 3.5), or L(1-x)L'xL'' Oy (wherein, L is a group IIA or IVA metal taking a divalent state in the form of an oxide; x is a number of 0 to 1; L' is a metal having an ionic radius of 0.90 ANGSTROM  or more; L'' is a group IVA, IVB, or IIIB metal taking a tetravalent state in the form of an oxide; y is a number of 2.5 to 3.5), and the palladium accounts for 0.01 to 15% of the catalyst by weight. <IMAGE>
Patent AU-8783198-A (AU)
Title: Sol-gel coated polarization vessels
Inventor: CATES GORDON D JR
IPC: A61K49/18
Filed: 1998-08-13
Abstract: The present invention relates to a polarization cell which is coated with glass deposited from a sol-gel used for hyperpolarizing noble gases. The invention also includes a method for hyperpolarizing noble gases utilizing the polarization cell coated with glass deposited from a sol-gel. These polarization cells can also be incorporated into containers used for storage and transport of the hyperpolarized noble gases.
Patent AU-9157901-A (AU)
Title: Methods of treating inflammatory and immune reactions and compositions therefor
Inventor: ZHONG Z ROBERT
IPC: A61P17/02
Filed: 2001-09-28
Abstract: Compositions and methods for treating inflammatory cell infiltration in a tissue of a mammalian subject are provided. The method involves administering a therapeutically effective amount of SERP-1/immunosuppressant combination admixed with a pharmaceutically acceptable carrier to a subject in need of such treatment. The compositions and methods of the present invention are useful for treating numerous inflammatory based diseases and injuries.
Patent AU-9529498-A (AU)
Title: Device for combined urinary drainage and catheterization of incontinent male human beings
Inventor: SAUER MANFRED
IPC: A61F5/453
Filed: 1998-08-04
Abstract: The invention relates to a device for combined urinary draining and catheterization of incontinent male human beings, especially paraplegics, comprising a condom (2) with an orifice (1) in the front region adhering to the body (3) of the penis, a connection device (4) which can be hermetically joined to the orifice (1) of the condom (2) and detachably connected to a urine collector and a catheter (5) whereby said connection device (4) must be removed to enable catheterization. In order to be easy to use and hygienic, the inventive device includes a spreader device (7) which is used to enlarge the orifice (1) of the condom (2) enabling the orifice (1) to enlarge to such a degree that the condom (2), together with the spreader device, (7) can be slipped from the orifice onto the glans (6) and at least part of the body (3) of the penis and back again.
Patent BE-897041-A (BE)
Title: Heat retaining screen for pan handle - consists of deflector strip extending from outside of pan
IPC: A47J36/36
Filed: 1983-06-13
Abstract: The heat-retaining screen is for protecting pan handles and grips liable to become over-heated. A deflector (1) extends against the outer wall of the pan (2), and just below the handle (3) so that it repels the hot fumes and heat rays. The screen can be circular or non-circular and extends right round the pan. It is formed of one or more flexible strips part of which clings to the side of the pan, while the other part extends outwards and forms protuberances. The strip may have slots into which fit studs.
Patent BE-759976-A (BE)
Title: Multicoloured dyeing of natural polyamides - and synthetics dyed by acid dyes
IPC: D06P1/647
Abstract: Multicolored dyeing of natural polyamide fibrous materials or synthetic materials which can be dyed with acid dyes, e.g. wool and silk or synthetic polyamides such as Nylon 6, Nylon 7, etc. polypropylene modified by basic radicals, polyacrylonitrile modified by basic radicals and acrylonitrile copolymers modified by basic radicals, comprises impregnating the textile material locally with a compn. contg. one or more colourless cpds. able to react with the fibres and one or more acid dyes, fixing the impregnated material and exhaust dyeing the textile with one or more dyestuffs of a different shade. Thus a Nylon 6.6 fabric is dyed a red and white pattern on a blue background.
Patent BG-97234-A (BG)
Inventor: ILIEV MITKO S
IPC: B03B5/28
Filed: 1992-12-23
Abstract: Методът намира приложение при преработване на руди с повишено съдържание
на глинести минерали. С него се постига комплексно използване на
глиносъдържащите руди, вследствие на което се намаляват енерги йните разходи,
подобрява се екологичната среда и се намаляват капиталните вложения. По метода
от дезинтегрирана руда след многостадийна класификация и шламова флотация се
получава обогатен на глинести минерали финодисперсен шлам, който се сгъстява и
филтрира. При друг вариант от дезинтегрираната руда след предварителна
Patent BR-0000504-A (BR)
Title: Suporte pedal de descanso lateral de bicicleta com pequena roda de apoio
Inventor: GOLDSCHMIDT-ROTHSCHILD CYRIL R
IPC: B62H1/00
Filed: 2000-02-14
Abstract: <B>"SUPORTE PARA PEDAL DE DESCANSO LATERAL DE BICICLETA COM PEQUENA RODA DE APOIO"<D> constituído por suporte <B>(1)<D> composto de placas metálicas cortadas e dobradas externa <B>(2)<D> e interna <B>(3)<D> com secções superiores essencialmente trapezoidais <B>(15)<D> e <B>(16)<D> que são presas no quadro da bicicleta <B>(10)<D> por parafusos <B>(18)<D> e porcas internas (não mostradas) e no parafuso-eixo da roda traseira travado pela porca <B>(20)<D> e com secções retangulares inferiores inclinadas para fora <B>(4)<D> e <B>(5)<D> onde se articula, excêntricamente, a extremidade superior da haste curva do pedal de descanso lateral <B>(11)<D>, com ou sem extensor interno inferior para ajuste telescópico de altura <B>(12)<D>, com dita placa interna <B>(3)<D> dotada de um pino para fixação de extremidade de mola helicoidal de tração <B>(14)<D> cuja extremidade oposta é presa em pino <B>(21)<D> da haste curva do pedal de descanso lateral <B>(11)<D>, e, na sua extremidade inferior ou na extremidade inferior do extensor interno de sistema de ajuste telescópico de altura <B>(12)<D> dotado de um bloco <B>(22)<D> onde se prende o parafuso-eixo da roda de borracha ou plástico maciço <B>(23)<D>, cujo desenvolvimento visa obter um suporte rapidamente fixado na bicicleta com um pedal de descanso lateral com pequena roda de apoio de forma que permite, quando a pessoa estiver transitando em baixa velocidade, criar um terceiro ponto de apoio para dar maior estabilidade ao ciclista.
Patent BR-0003502-A (BR)
Inventor: THIELKING HEIKO
IPC: B01J19/12
Filed: 2000-08-11
Abstract: PURPOSE: Provided is a method for producing carboxy methyl cellulose, capable of preparing the carboxy methyl cellulose in a short time and generating a small amount of by-products at a low process cost. CONSTITUTION: The method comprises (a) activating the cellulose and (b) reacting the activated cellulose with one or more kinds of carboxy methylation agent. The reaction process (b) is carried out in an electromagnetic field having 10 MHz to 23 GHz frequency.
Patent BR-0003834-A (BR)
Title: Moto door para divulgação de peças publicitárias
Inventor: GRAMACHO ANTONIO AUGUSTO PASSO
IPC: G09F21/04
Filed: 2000-08-14
Abstract: "MOTO DOOR" PARA DIVULGAçãO DE PEçAS PUBLICITáRIAS". A presente invenção, em apenas uma estrutura, tem a função de exibir nas suas duas faces, imagens (peças publicitárias) conduzida por moto, ampliando assim a capacidade de divulgar o produto exposto, proporcionando um retorno mais imediato acerca da avaliação do consumidor, com menor custo final para o anunciante. O dito MOTO DOOR é constituído por uma caixa hermeticamente fechada e colocada sobre uma moto (figura 1) que através das lâminas de acrílico transparente acondicionados por um aro também metálico (figura 2) expõe imagens, apresenta em seu interior um conjunto de lâmpadas fluorescentes fixados a um esqueleto de ferro que iluminam de dentro para fora do ambiente (figura 4) e é fixada sobre a parte traseira, da moto por um suporte em ferro fundido formando um ângulo reto assegurando o seu equilíbrio (figura 5).
Patent BR-0004537-A (BR)
Title: Sìntese de antibióticos cetólidos carbamatos
Inventor: KANEKO TAKUSHI
IPC: A61P31/04
Filed: 2000-09-29
Abstract: Patente de Invenção: <B>"SìNTESE DE ANTIBIóTICOS CETóLIDOS CARBAMATOS"<D>. A invenção diz respeito a um método de preparação de um antibiótico macrólido de fórmula em que R¹, R², R³, R^ 4^, R^ 5^ são definidos acima. Estes antibióticos são úteis como agentes antibacterianos e antiprotozoários em mamíferos, incluindo o homem, bem como em peixes e aves. A invenção também inclui novos compostos feitos para a preparação do antibiótico macrólido.
Patent BR-0004929-A (BR)
Title: Suporte para aparelhagem
Inventor: ADAM DAMIEN
IPC: H02G3/30
Filed: 2000-10-13
Abstract: "SUPORTE PARA APARELHAGEM". A invenção diz respeito a um suporte (10) para aparelhagem, em particular para aparelhagem elétrica, a ser fixado sobre a base de um conduto com retornos dirigidos um em direção ao outro, do tipo compreendendo duas travessas (25T') as quais, por intermédio de meios de engate são aptas em engatar-se com os ditos retornos, e cuja cada uma é equipada de meios de fixação da dita aparelhagem. De acordo com a invenção, os meios de fixação (51) são ligados a cada travessa por meio de uma ligação flexível (61) autorizando um ligeiro deslocamento dos ditos meios de fixação segundo a direção geral (Y) da travessa em relação a uma posição de origem estável, quando da fixação do dito aparelho sobre o dito suporte. Aplicação, particularmente, às aparelhagens elétricas.
Patent BR-0009418-A (BR)
Inventor: DEPPNER KARL-HEINZ
IPC: C21C5/46
Filed: 2000-04-06
Abstract: In order to impede entrainment or trailing of molten slag (1) while tapping molten metal (2) from a metallurgical vessel (5) having a tap hole (1) in the bottom (13) of said vessel, the molten slag (1) is blown away from the surface of the molten metal in the area of the tap hole (10) (2) by a gas jet (9) with high impulsive energy.
Patent BR-0009820-A (BR)
Inventor: NEUMANN GEROLD
IPC: G02F1/15
Filed: 2000-04-18
Abstract: The present invention relates to a paste-like mass that can be used in electrochemical structural elements comprising (A) 0-70% by weight of a matrix containing or consisting of at least one organic polymer, precursors thereof, or prepolymers thereof, and (B) 30-100% by weight of an electrochemically activatable inorganic material that is preferably not soluble in the matrix and that is in the form of a solid substance, and additionally, if necessary, a suspending agent for (B), characterized in that said electrochemically activatable material is at least partially a nanocrystalline powder, with the proviso that said material (B) is not a material that can be used as electrode material in the absence of (A). Said mass is suitable for producing layers that are self-supporting or that are placed on a substrate from which or with which composite layers with electrochemical properties can be produced, such as accumulators, batteries, condensators (supercaps), solar cells and electrochromic indicating elements. The invention also discloses methods for producing the masses, layers, and composite layers.
Patent BR-0009920-A (BR)
Title: Processo para causticação de soluções alcalinas
Inventor: WITT GERALDINE CHARMAINE DE
IPC: C01F7/0646
Filed: 2000-04-20
Abstract: "PROCESSO PARA CAUSTICAçãO DE SOLUçõES ALCALINAS". Processo para causticação de uma solução alcalina, o processo caracterizado pela etapa de adição de uma quantidade de cal à solução alcalina para produzir uma mistura de reação, de tal modo que a temperatura de reação da mistura de reação assim produzida excede rapidamente o ponto de ebulição atmosférica da solução alcalina.
Patent BR-0011412-A (BR)
Inventor: RIDDLE CHRISTOPHER C
IPC: H04L25/02
Filed: 2000-06-09
Abstract: A Wireless Code Division Multiple Access method and apparatus for determining the transmitted rate of a voice/data signal from a mobile station to a Base Station. Variable rate vocoders transmit voice at one of several predetermined frame rates. The receiver determines the transmitted rate based on one of several frame parameters. One of the parameters is received frame energy. The received frame energy is measured over the length of the relevant portion of the frame. Energy is measured over the half of the frame that can only contain energy if a full rate frame is sent. If the energy measured exceeds a threshold, then full rate is indicated. Else, energy is measured over the fourth of a frame that can only contain energy if a half rate frame is sent. If the energy exceeds a threshold, then half rate is indicated. The procedure is repeated for quarter and eighth rates.
Patent BR-0015290-A (BR)
Inventor: BYRNE CHARLES MICHAEL
IPC: B65D85/73
Filed: 2000-11-03
Abstract: A container contains coffee, tea or a soft drink saturated with an inert gas and, if necessary or desired, a foam-retaining agent. Alternatively, a bulk container includes coffee, tea or a soft drink and, if necessary or desired, a foam-retaining agent, in association with means for dispensing the soft drink, and means for introducing an inert gas on dispensing. <??>By means of the invention, a non-alcoholic drink is dispensed with a creamy head.
Patent BR-0016071-A (BR)
Title: Método para inibir polimerização prematura de monÈmeros etilenicamente insaturados e composição
Inventor: BENAGE BRIGITTE
IPC: C07C15/46
Filed: 2000-11-28
Abstract: "MéTODO PARA INIBIR POLIMERIZAçãO PREMATURA DE MONÈMEROS ETILENICAMENTE INSATURADOS E COMPOSIçãO". é revelado um método para inibir a polimerização prematura de monómeros etilenicamente insaturados, o qual compreende adicionar aos monómeros uma quantidade eficaz de uma mistura compreendendo pelo menos dois inibidores diferentes tendo a fórmula estrutural: Nesta fórmula, R~ 1~ e R~ 4~ são independentemente selecionados do grupo consistindo em hidrogênio, alquil e alquil substituído por heteroátomo e R~ 2~ e R~ 3~ são independentemente selecionados do grupo consistindo em alquil e alquil substituído por heteroátomo; e X~ 1~ e X~ 2~ (1) são independentemente selecionados do grupo consistindo em halogênio, ciano, COOR~ 11~, em que R~ 11~ é alquil ou aril, amido, -S-C~ 6~H~ 5~, -S-COCH~ 3~, -OCOC~ 2~H~ 5~, carbonil, alquenil, em que a ligação dupla não é conjugada com a fração nitróxido, ou alquil de 1 a 15 átomos de carbono ou (2) tomados juntos formam uma estrutura de anel com o nitrogênio.
Patent BR-0016962-A (BR)
Inventor: DONOVAN STEPHEN
IPC: A61P1/18
Filed: 2000-06-27
Abstract: A method for treating a pancreatic disorder by local administration of a neurotoxin, such as a botulinum toxin, into a cholinergic influenced, exocrine pancreas or endocrine pancreas, thereby reducing a secretion from the injected pancreatic tissue and effectively treating the pancreatic disorder.
Patent BR-0100976-A (BR)
Inventor: ONISHI KAZUAKI
IPC: A61F13/15
Filed: 2001-03-07
Abstract: A sanitary article having a multi-layered absorbent member 1 includes a panel H stacked in two layers each having a plurality of openings H extending through this member 1 in its thickness direction and a plurality of fibrous assembly regions R extending between each pair of the adjacent openings, the openings H in the upper layer of the panel P are out of alignment with the corresponding openings H in the lower layer of the panel H and each of the openings H in the upper layer of the panel P is divided in two or more sections by the fibrous assembly regions in the lower layer of the panel P. <IMAGE>
Patent BR-0104832-A (BR)
Title: Cápsula de proteção para seios no perìodo de amamentação
Inventor: BECKHAUSER MARIA APARECIDA RIB
IPC: A61J13/00
Filed: 2001-10-29
Abstract: "CáPSULA DE PROTEçãO PARA SEIOS NO PERìODO DE AMAMENTAçãO". Constituída por recipiente (1) com feitio ordinariamente esférico achatado, definido por duas partes distintas, uma corpo (2) e uma tampa (3), cujas partes que se defrontam são circulares e escalonadas (4) compatíveis para serem acopladas entre si com facilidade, enquanto pelos lados opostos ao ponto de acoplamento, as duas peças, tampa e corpo, apresentam características distintas, onde o corpo é convexo definindo uma proeminência suave (5), enquanto a tampa apresenta um feitio exatamente inverso, descrevendo uma concavidade igualmente suave (6) e, na sua parte mais funda, centraliza uma abertura circular (7) condizente para penetração do mamilo (M), mantendo-o no interior da cápsula e, ao mesmo tempo, a tampa (3) fica amolgada cobrindo anatomicamente a região anterior do selo e, nesta condição, todo conjunto pode ser coberto pela roupa da usuária (R) (sutiã ou blusa).
Patent BR-0109056-A (BR)
Title: Inibidores da cinase de tirosina de 5-alquilpirido[2,3-d]pirimidinas
Inventor: BOOTH RICHARD JOHN
IPC: A61P35/00
Filed: 2001-01-29
Abstract: "INIBIDORES DA CINASE DE TIROSINA DE 5-ALQUILPIRIDO[2,3-d]-PIRIMIDINAS". São divulgados compostos da fórmula (I) em que: R^ 2^ é hidrogênio, alquila ou cicloalquila; R^ 3^ é hidrogênio, alquila inferior, alcóxi inferior, halogênio, trifluorometila, alquinila inferior, alquenila inferior, nitrila, nitro, -COR4, -CO2R4, -CONR4R5, CONR4OR5, -SO2NR4R5, SO2NR4R5, -SO2R4, -SO3R4, fórmula (II) ou NR4R5; Y é N ou CR7; R9 é alquila inferior, haloalquila ou arila; X e Z são, independentemente, hidrogênio, halogênio, alquila inferior, alcóxi inferior, trifluorometila, hidróxi, nitrila, nitro, -NR^ 4^R^ 5^, -N(O)R4R5, -NR4R5R6W, -SR4, -C(O)R4, -CO2R4, -CONR4R5, -SO2NR4R5, -SO2R4, -SO3R4, P(O)(OR4)(OR5), -T(CH2)~ m~QR4, -C(O)T(CH2)mQR4 ou -NR4C(O)T(CH2)mQR5; m é 1 a 6. Esses compostos são úteis para o tratamento de distúrbios proliferativos das células tais como câncer, aterosclerose e restenose. Esses compostos são inibidores potentes das cinases ciclina-dependentes (cdks) e das cinases fator do desenvolvimento-mediadas.
Patent BR-0109189-A (BR)
Title: Composições farmacêuticas de inibidores de fosforilase de glicogênio
Inventor: HOOVER DENNIS JAY
IPC: A61P9/12
Filed: 2001-03-16
Abstract: "COMPOSIçõES FARMACêUTICAS DE INIBIDORES DE FOSFORILASE DE GLICOGêNIO". A invenção refere-se a composições farmacêuticas que incluem um inibidor de fosforilase de glicogênio e pelo menos um polímero intensificador da concentração. A composição pode ser uma simples mistura física do inibidor de fosforilase de glicogênio e de polímero intensificador da concentração ou uma dispersão de inibidor de fosforilase de glicogênio e de polímero intensificador da concentração.
Patent BR-0109662-A (BR)
Inventor: STENGEL PATRICE
IPC: B09C1/08
Filed: 2001-03-27
Abstract: The present invention relates to a depollution treatment method for soil constituted by materials based mainly on sand and/or earth that have been contaminated with hydrocarbons, wherein said hydrocarbon-contaminated material is mixed at ambient temperature with a hydrogen peroxide solution until gas is given off and said hydrocarbons are separated by flotation.